var ajax = new Array();

function getDestinationList(sel)
{
	var nwa_origin_pk = sel.options[sel.selectedIndex].value;
	if (nwa_origin_pk == '%' || nwa_origin_pk == '')
		return
	document.getElementById('selectDestination').options.length = 0;	// Empty Lease select box
	if(nwa_origin_pk.length>0){
		var index = ajax.length;
		ajax[index] = new sack();
		ajax[index].requestFile = '/includes/getResults.php?nwa_origin_pk='+nwa_origin_pk;	// Specifying which file to get
		ajax[index].onCompletion = function(){ createDestination(index) };	// Specify function that will be executed after file has been found
		ajax[index].runAJAX();		// Execute AJAX function
	}
}

function createDestination(index)
{
	var obj = document.getElementById('selectDestination');
	eval(ajax[index].response);	// Executing the response from Ajax as Javascript code	
}